Dispensing and measuring device



1923 2 sheets-sheet 1 M. J. slELA-FF DISENSING AND MEASURING DEVICE Fi1ed`June 14,

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Aug. 3,1926. A l A M.A J. SIELAFF I -DISPENSING AND MESURING DEVICE A j 4 Filed June 14, 1923 2 Sheets-Sheet 2 Pater-ated Aug. 3, 1926.

UNITED STATES MAX J. SIELAFF, 0F CLEVELAND, OHIO.

DISPENSING AND MEASURING DEVICE.

' Application tiled .Tune 14, 1923.

This invention relates to liquid measuring and dispensing apparatus, and more particularly to apparatus or this character which is employed tor the purpose of dispensing a measured quantity orn liquid; and, in the form illustrated herein,`is particularly Vwell adapted for dispensing grease or oil.

Among the object-s of the invention are: to provide a simple, efficient and economical apparatus for the purpose set forth; to provide such apparatus with convenient means whereby only a predetermined amount of the liquid may be discharged during each cycle of operation or the piston or plunger; to provide a novel cooperating arrangement of stop and piston mounting; and to improve the construction oi pistons for apparatus of this character. Further and more limited objects of the invention will appear in the speciiication and will be 'set forth in the combinations of 'elements embodied in thev claims. v

In the drawings, lillustrating one embodiment of invention, Fig. i represents a central vertical sectional view through the operatiiigr tank and a dispensing cylinder and plunger constructed in accordance with my invention; Fig. 2 a similar view of the cylinder and plunger, taken at substantially right angles to Fig. l, the other parts being shown in elevation; Fig. 3 a plan view of the apparatus shown in Fig. 1; the top of the tank being omitted; Fig. 4 a sectional detail showing the lower end of the supply pipe andV the bottom of the tank; and Figs. 5 and 6 sectional details corresponding.respectively to the lines 5-5 and 6 6 of Fig. 1.

Describing the various parts in detail, l denotes the' top and 2 the bottom wall of' a tank inwhich the grease or other material to be dispensed is contained. The top of this tank is provided with the usual bunghole 3 which is adapted to receive the lower end of a sleeve 4. The sleeve is provided with a threaded lower end ra and a threaded shoulder 4b. There the tank has a bunghole ot the diameter ot the lower end ta, the screw will be threaded-into a nut or sleeve 6 welded or otherwise suitably secured to the under side of the top 1, the 'sleeve being` locked in place by 'a nut 5 threaded onto the shoulder 4b. Vhe-re the tank has a bunghole of the diameter oin the shoulder 4b, then this shoulder will be threaded into the nut or sleeve 6 and the nut 5 will be applied to the opposite or upper portion of the shoul- Seral No. 645,250.

yThis platform is' provided with vribs 1.0

adapted to support cup orv receptacle which is to receive the measured quantity or grease or other material delivered by the pump.

Above the connection 7, the bore of the sleeve is reduced and provided with a thread 4c, being provided above such threaded bore with an outwardly and upwardly `iia'ring port 4d discharging into the bottom of' the cylinder. The upper section 11 oit the supplypipe is threaded into the bore Lic. The lower end or this section is telescoped within the upper portion of thelow'er section 12, said lower section extending to the bottom 2 and being provided vwith'openings 12a for admitting the greasel or other liquid into the section 12. The 'upper end of the section 12 is provided with a threaded recess indicated at 12b, said recess being adapted toreceive the lower end of a packing sleeve 13, threaded thereinto, with packing (indicatedat 14) inserted between the lower end of said sleeve and the bottom of the recess 12b. This construction of supply pipe enables the latter to be adjusted as to length for varying depths of tank while maintaining a leak-proof connection'between the two telescopic sections, whereby Vthe vacuum,v or partial vacuum, produced within said pipe during 'the upward movement of the piston will be maintained.

l5 denotes the body of the cylinder, the Same being` provided with 'an inverted frusto-conical bottom 1G. The cylinder and its` bottom are shown as a continuation of the sleeve t, the port 4d being at the center or' the bottom of the cylinder;said portA being provided with a ball check valve, indicated at 17.

The piston shown herein consists generally of an upper and a lower section, with packing ring clamped between said lsections land a flap check valve mounted upon the upper and lower sections and controlling the ports or openings in the' lower section'.

The upper section comprises a circular plate v18 having a hollow central stud 18EL which is adapted to engage the central portion of the lower piston section, indicated generally at 1f). The plate 18 is provided with openings 1Sb therethrough and with a in the top of the plate 18, with its lower end threaded into the central opening in the plate 19. Mounted on the sleeve or hollow stud 18a is the collar 22a of a flap valve 22, the said flap valve being preferably of leather and being retained in proper relation to the lower section 19 and vthe ports 19b therethrough by means of a helical spring 23 surrounding the collar 22LL and bearing at its lower end against the horizontal portion of the flap valve and its upper end against the shoulder 18e. Reference has been made to the annular seat 19a for a packing ring. The packing ring shown herein is preferably of leather and comprises a horizontal portion 24 fitting in said seat and a vertical cylindrical portion 24a adapted to engage the inner wall of the cylinder 15. The packing ring is retained in place by means of the lower end of the wall 18C.

Projecting upwardly from the head 21 of the stud 2O are two lugs 21a, the said lugs supporting a pin 25 to which is connected the lower end of a coiled spring 26. The upper end of said spring is connected to the central portion 2'7l of a crank 27, one of the arms 28 of which is secured rigidly to the inner end 29e"1 of a shaft 29 mounted in a housing 30a carried by and projecting upwardly from the cover 30 for the cylinder. The other arm 28L is mounted on the inner enlarged cylindrical end of a stud 31, the inner end of said stud being within a housing 32 carried by and projecting upwardly from the cover 30. the outer end of the stud projecting through the said housing and a boss 32a thereon and being drawn to its seat by means of a nut 31a. From the housing 32 extends the delivery spout 33.

The shaft 29 is provided, within the housing 32, with'a ratchet wheel 34 which is adapted to be engaged by a detent pawl 35, to prevent backward rotation of the shaft 29 by the handle 36 and arm 37. Projecting through the top of the cylinder and into the interi-or of the cylinder is a stop screw 38, which is adapted to limit the upward movement of the piston or plunger. This stop screw may be secured and locked in its adjusted position in any desired manner, preferably by the means disclosed in my copending application No. 645,249, tiled June 14, 1923.

lith the parts constructed and arranged as described, the operation will be readily understood.

Grease (or other liquid) will be delivered by the upward movement of the piston (caused by the rotation of the shaft), through the delivery spout 32. VShould the bottom of the stop screw 38 engage the piston before the crank v27 reaches its upper center, the spring 26 will yield and permit the crank to pass its uppercenter without injury to the parts. rllhe spring will be of suiiicient stiiiness so that, after the crank shall have passed its upper center, it will cooperate with such crank to assist in moving the piston downwardly, the peripheral portion of the iiap valve liftingas the piston descends to permit the free passage o the grease or other liquid through the ports or openings 19b and 18". The'tapering of the bottom 16 of the cylinder allows the valve 17V to be quickly seated at the end of the upward movement of the piston and to remain seated until .the next upward excursion of the latter.

VAny drip from the spout 23 or any liquid spilled from the receptacle upon'the platform will drain through the trough 9a, pipe 8, and the annular chamber in the neck 4 into the tank. Y

Having thus described my invention, what I claim is:

1. A measuring and dispensing device comprising a cylinder having a delivery outlet and a supply connection, a piston movable between said outlet and connection, vand means for operating` said piston, said means comprising a shaft having an Voperating arm outside said cylinder, a crank mounted on said shaft within said cylinder, and a piston connected througha resilient element with said crank, said piston having one or more valve controlled ports therethrough,

2. A measuring and dispensing device comprising a cylinder having a delivery outlet and a supply connection, a piston movable between said outlet'and connection, said piston having one or moreports arranged to permit the passage of liquid therethrough during its movement toward'theA said connection, a shaft for operating the said piston, and a flexible connection between the said shaft and the said piston.

3. A measuring and dispensing device comprising a cylinder having a delivery outlet and a supply connection, a piston within said cylinder movable between said outlet and said connection, said piston having one or more ports adapted to allow the passage of liquid therethrough during its movement toward the said connection, a shaft, a flexisi ible connection between the said shaft and limiting the movement of the piston toward the outlet. Y

4E. A measuring and dispensing device comprising a cylinder having a delivery outlet and a supply connection, a piston movable between said outlet and said connection, the said piston having one or more ports adapted .to permit the passage of liquid therethrough during'its movementI toward the said connection, a shaft7 a crank on said shaft, and a coiled spring connecting said crank with said piston.

5. A measuring and dispensing device comprising a cylinder having a supply connection and a delivery outlet, a piston m0v able between said connection and outlet and having one 0r more openings for the passage of liquid therethrough during its movement toward the said connection, a shaft having a crank within said cylinder7 a coiled spring connecting the said piston and the said crank, a ratchet on said shaft, and a detent pawl cooperating with said ratchet.

In testimony whereof, I hereunto aix my signature.

` MAX J. SIELAFF. 

